<template>
  <div>
    <h2>BsIcon</h2>
    message:{{ message }}
    <hr>
    title:{{ title }}
    <hr>
    username:{{ username }}
  </div>
</template>
<script setup>
import { inject } from 'vue';

const message = inject('message');
const title = inject('title')
const username = inject('username', () => 'rose', true)
</script>